View Full Version : Do I re-jet or not?

03-01-2007, 12:04 PM
With a new Yoshi slip on is necessary to do this? (re-jeting)
any comments... :-D

03-01-2007, 12:06 PM
Most slipons will be okay with stock jetting, however to get the most out of it you'll probably want to rejet.

03-01-2007, 01:27 PM
Is that something I can do (not good with mechanics lol)?
Is expensive?

03-01-2007, 01:51 PM
It's not a job for a novice.

Here's a link to trinc's write up:

03-01-2007, 04:19 PM
so my best shot will it be to take it to a "shop"?

03-01-2007, 04:29 PM
It's really not hard. Good directions will help. I have now done a 600 and a 750. Two different kits and no problems with either. And also both didn't require tweaking.

03-01-2007, 07:29 PM
if you do take it to a shop, i recommend a dyno shop with an exhaust gas analyser. no reason to pay fees to someone that thinks they can tell real air/fuel mixtures, as opposed to someone that can tell exactly what the bike is doing. i know some people keep stock jetting just have to richen up the pilots to stop deceleration popping.

03-01-2007, 07:58 PM
So if I don't re jet I'm going to get the popping sound?

03-02-2007, 01:29 AM
Most likely , yeah .

03-02-2007, 05:55 AM
also some decel popping comes with the fact that you put a slip on or full system. sometimes you can't get ride of it completely

03-02-2007, 11:13 AM
Any idea how much will it cost (average)?

03-02-2007, 10:32 PM
A jet kit ? Usually see them around $100-$120 .

The CyberPoet
03-03-2007, 12:24 AM
Expect to pay $139, use www.ivansperformanceproducts.com, and if you're willing to roll to Tampa, I can help you put it in, if you're scared of doing it yourself.

Do you need it? Probably not, but you'll get a lot richer mid-range and better throttle response as a result.

=-= The CyberPoet

03-03-2007, 08:22 AM
Thanks Cyber

03-07-2007, 10:03 PM
what exactly is happening when the exhaust is popping on decel?

03-07-2007, 11:45 PM
It leans out so it won't ignite in the cylinder , then once enough fuel builds up in the exhaust , it ignites .

03-08-2007, 05:20 PM
If you're going to rejet it's worth the extra to get it dyno'ed and set up right IMHO